European Journal of Applied Engineering and Scientific Research
Abstract
Author(s): Ketamm Abd AL-Adel, Hussain A. Badran
The nonlinear optical properties of Benzo congo red in Dimathyl sulfoxide (DMSO) solvent and polymer were
studied using single beam Z-scan technique with a continuous-wave radiation at 532 nm of an output power of 40
mW. All the solution samples and polymer showed large nonlinear refractive indexice and absorption coefficient of
the order of 10-8 cm2/W and 10-3 cm/W, respectively. The concentration-dependent nonlinear refractive index was
also investigated. We presents experimental evidences of observing diffraction pattern in congo red dye: DMSO
solvent with the calculation of the refractive index change, ?Ž??n , the relative phase shift, DF , and effective
nonlinear refractive index ,n2. The solvent of spectroscopic grade and was used without further purification. All the solutions used for the study were freshly prepared.
